Different machines to meet all needs
Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [1.1m] in diameter. By slipping on and off a couple of belts, the machine can quickly be reconfigured for spinning work or for stroking work.
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You may notice that many commercial telescope advertisements proclaim they use "Hand Figured Optics" - in fact this is one of the best and least expensive ways to get an accurate surface on a mirror - most machines just can't hold the tolerances necessary, and any good telescope optic, including the mirror you could make in your kitchen, should be hand figured.
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Rough grinding a telescope mirror. The Oltion Relationship Jerry Oltion points out that if the sagitta is 1/16 of the unit of measure, the focal ratio is the mirror diameter.
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(3) A homemade telescope mirror can be made with more accuracy and smoothness than the mass-produced, commercial mirrors available today. Unfortunately, the cost of mirror grinding kits and pyrex blanks has increased significantly in recent years to the point where any savings from making a mirror .
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Mirror Grinding Machine. My Mirror Grinding Machine. For a long time I ve wanted to build a machine for grinding telescope mirrors. Dennis Rech s M-o-M designs finally inspired me to just get up and do it. Over the years I d been collecting motors gear boxes pulleys etc. Get Price; Amateur Telescope Making Main PageStellafane
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Mirror Grinding Machine telescope mirror grinding machine based on Dennis Rech's M o M 20 Read More; Grinding machine A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting toolEach grain of abrasive on the wheel's get price
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23.09.2012 · After hogging the mirror blank to depth, the rough grinding stage begins. In this video I am grinding with 60/90 grit. The wets are lasting about 90 seconds ...
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16.11.2018 · Types of mirror grinding machines - posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; - Some machines have fixed supportes and some of them have a prestaltic moving arm, .
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mirror grinding machine design. The mirror machine came to me as a result of astronomical horse-trading swapping a large GEM mount and a 8" Newtonian OTA for the machine as it was and a start kit consisting of two 6" blanks and the grit rouge and pitch to manufacture a mirror.
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As often in sciences and technology, Leonardo da Vinci was a pioneer, creating machines for the production of optical devices. Indeed, between 1513 and 1517, he imagined machines to grind and polish telescope mirrors, which, at the time, were made of bronze.
GET PRICE >>It is a fine-looking, near full-thickness, 10 inch diameter blank that I intend to grind and polish into a 1st class telescope mirror. Here is a stack of my home-made 8 and 10 inch mirror blanks. The second from the bottom is the one above. I can use the thinner blank below it as the grinding tool. UPDATE
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Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, "I can make my own telescope." ... Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the "tool". The tool is equal in diameter to the primary.
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Very old mirror/lens grinding machine. This machine can grind and polish using different stroke patterns, i.e. w-stroke, short strokes, long strokes, etc. Cu...
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I finally decided it was time to build a machine to help me grind the edges of the blanks true and round. This is my home-built edge grinding machine for grinding down my home-cast mirror blanks. Click to see the whole project. This is a 12.5 inch diameter, 1.5 inch thick, light-weight honeycomb-back telescope mirror blank that I made myself.
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homemade mirror grinding machine homemade mirror grinding machine GrindingPolishing and figuring a 14 f385 Telescope Mirror Furthermore I decided that I would like to grind and polish the mirror myself There are several benefits to do is sourcing the glass blank and various grinding powders required. Read More
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I borrowed a few ideas from the Mirror-O-Matic mirror grinding machine, particularly how to mount the turntable on top of the pulley. Anyone building machinery for cold-working glass should have a look at the MOM web site and plans. There are lots of good ideas there. The large wood circle will become the base of the turntable.
GET PRICE >>09.05.2013 · A sample --and quite simple-- video of Vitastra's mirror making machine. ... Using the Fixed-Post Grinding Machine for Rough Grinding an 11-inch Telescope Mirror - Duration: 5:53.
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16.12.2014 · Gordon started with a 2" thick telescope mirror that weighed about 70 pounds. By thinning the blank, he's lightened the mirror by about 20 pounds! This video explains how he ground off the excess ...
Autor: GordonWaiteGET PRICE >>US suppliers of Mirror Blanks, Grinding & Polishing Supplies, and Telescope Making Supplies. Astronomy Clubs Many can offer help with your project. Astronomy Conventions & Star Parties A good place to look at various telescopes and chat with their owners. Mirror Making Courses & Workshops
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Mirror-O-Matic grinding machine. When I decided in 2009 after a ten-year break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician.
GET PRICE >>Construction and Design. Parsons improved the techniques of casting, grinding and polishing large telescope mirrors from speculum metal, and constructed steam-powered grinding machines for parabolic mirrors.His 3 feet (91 cm) mirror of 1839 was cast in smaller pieces, fitted together before grinding and polishing; its 1840 successor was cast in a single piece.
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25.07.2015 · Homemade polishing machine,Grinding 10" pyrex telescope mirror. Ryland Wood. 2:32. First stage of grinding a telescope mirror pt 2. Soldiersqualid. 2:35. Panasonic HDC-SD60 Telescope mirror grinding machine. Ex Webcam. 2:30. Telescope Making, Checking the depth of curve during rough grinding.
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16.11.2018 · Types of mirror grinding machines - posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; - Some machines have fixed supportes and some of them have a prestaltic moving arm, .
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16.11.2018 · Types of mirror grinding machines - posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; - Some machines have fixed supportes and some of them have a prestaltic moving arm, .
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16.07.2020 · George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s. Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory.
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It makes mirror grinding a pure joy. The machine has ple adjustments as you can see from the pictures. The machine has been kept in my house and is in good running order. I used it over the holiday on a 12.5" blank you see in the picture. The turntable I have on the machine .
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Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telescope (e.g. F/D = 4) well suited for deep sky observations. On the opposite, a shallow mirror .
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Polishing a mirror is one of the great joys you will experience as a maker and builder. It's also arguably the most accurate surface made by man or machine. If the mirror is expanded to the size of a football field, then the mirror's surface will be smooth to 1/1000 inch or 1/30 millimeter!
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26.05.2019 · This is my video on grinding and polishing two telescope mirrors, a 16 inch f3 and a 10 inch f3 mirror. Enjoy!
Autor: Australian Astronomy with Logan NicholsonGET PRICE >>
